[Christ]

The UCA - Slide a bottle jack into the area between the UCA and the top of a junk axle stub, jack it up, and when there's a bit of pressure on it (not insane pressure, just when it's snugged up) whack the side of the area that the ball joint seats into with a decent sized mallet, and it will pop loose. No pickle fork required.

You could also just drop ~$20 and knock the balljoints out by placing the nut back on the threads upside down (castle splits up) and whacking it with a hammer upward until it pops out. You'll want to replace them after doing this, though. They're held in with split rings, IIRC.